Topology | Battery Management System |
IC revision | 1.0 |
The STEVAL-BMS114TX is a battery management system (BMS) evaluation board that manages from 4 to 14 battery cells.The main advantage of this evaluation board is ensuring isolated connection to an external MCU, thanks to the embedded transceiver.The board is based on the L99BM114 Li-ion battery monitoring and protection chip for high-reliability applications and the L99BM1T general-purpose SPI to isolated SPI bidirectional transceiver.The main activity of the L99BM114 is monitoring the cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting.Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval.Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SOC) and the state of health (SOH).The L99BM1T general-purpose SPI to isolated SPI bidirectional transceiver can transfer communication data incoming from a classical 4-wire based SPI interface to a 2-wire isolated interface (and vice versa). In our board, the transceiver is configured as a slave.The STEVAL-BMS114TX provides an elaborate monitoring network to sense the voltage of each cell. It is possible to sense the current of the entire battery pack.Passive cell balancing can be performed either via the L99BM114 internal MOSFETs or via external MOSFETs. The controller can either manually control the balancing drivers or start a balancing task with a fixed duration. In the second case, the balancing may be programmed to continue even when the IC enters a low-power mode called silent balancing, to avoid unnecessary current absorption from the battery pack. The balancing function is necessary to lengthen the battery capacity and its duration.
Hosts the L99BM114 multicell battery monitoring and balancing ICHosts the L99BM1T general purpose SPI to isolated SPI bidirectional transceiverVoltage monitoring of every single cell and of the entire battery nodeCurrent sensing of the entire battery node5 GPIOs to connect temperature sensors as NTCsCN1 connector that allows establishing communication with an MCU board via SPICN2 connector that interfaces directly to an MCU board for control and diagnostic functionsPassive balancingCompact size: 100 mm x 76 mm
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Pitch (mm) | Mount | IR (A) | Working Voltage (V (AC)) | PCB/Cable/Panel | Contact Resistance (mΩ) | Tol. R | L (mm) | Stranded Wire Section (AWG) | Stranded Wire Section (Metric) | Qty. (pcs) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q (%) | DF (%) | RISO | Ceramic Type | W (mm) | Fl (mm) | Package | Input | VCE max. (V) | IF max. (mA) | Test Condition CTR | CTR min. (%) | CTR max. (%) | VISO (V (RMS)) | SW (mm) | Ti | Flammability Rating | Application | Interface Type | Pins (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Color | Samples | |
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![]() | 150080BS75000 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 470 | Blue | 465 | 145 | 3.2 | InGaN | 140 | – | SMT | – | – | – | – | – | 2 | – | – | 4000 | – | – | – | 0805 | -40 °C up to +85 °C | – | – | – | – | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | – | ||
![]() | 150080GS75000 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 525 | Green | 515 | 450 | 3.2 | InGaN | 140 | – | SMT | – | – | – | – | – | 2 | – | – | 4000 | – | – | – | 0805 | -40 °C up to +85 °C | – | – | – | – | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | – | ||
![]() | 150080YS75000 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 590 | Yellow | 595 | 120 | 2 | AlInGaP | 140 | – | SMT | – | – | – | – | – | 2 | – | – | 4000 | – | – | – | 0805 | -40 °C up to +85 °C | – | – | – | – | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | – | ||
![]() | 150080AS75000 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 605 | Amber | 610 | 130 | 2 | AlInGaP | 140 | – | SMT | – | – | – | – | – | – | – | – | 4000 | – | – | – | 0805 | -40 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Tape and Reel | – | ||
![]() | 150080RS75000 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 625 | Red | 630 | 150 | 2 | AlInGaP | 140 | – | SMT | – | – | – | – | – | 2 | – | – | 4000 | – | – | – | 0805 | -40 °C up to +85 °C | – | – | – | – | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | – | ||
![]() | 885012006053 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 22 pF | ±5% | 50 | 0603 | -55 °C up to +125 °C | 840 | – | 10 GΩ | NP0 Class I | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012006054 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 33 pF | ±5% | 50 | 0603 | -55 °C up to +125 °C | 1000 | – | 10 GΩ | NP0 Class I | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206085 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 2.2 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206087 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 4.7 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206088 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 6.8 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206089 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 10 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206093 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 47 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 3 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206094 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 68 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 3 | 7.4 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206095 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 100 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | – | 3 | 5 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012207079 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2 | – | – | 3000 | 2.2 µF | ±10% | 25 | 0805 | -55 °C up to +125 °C | – | 10 | 0.05 GΩ | X7R Class II | 1.25 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012207103 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2 | – | – | 3000 | 1 µF | ±10% | 50 | 0805 | -55 °C up to +125 °C | – | 10 | 0.1 GΩ | X7R Class II | 1.25 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012208094 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3.2 | – | – | 2000 | 4.7 µF | ±10% | 50 | 1206 | -55 °C up to +125 °C | – | 10 | 0.02 GΩ | X7R Class II | 1.6 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | – | 7" Tape & Reel | – | ||
![]() | 61900411121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.54 mm Male Locking Header | – | – | – | – | – | – | – | 2.54 | THT | – | 250 | PCB | 20 | max. | 10.16 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4 | – | – | Male | Vertical | 3 | Bag | – | |
![]() | 61900611121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.54 mm Male Locking Header | – | – | – | – | – | – | – | 2.54 | THT | – | 250 | PCB | 20 | max. | 15.24 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 6 | – | – | Male | Vertical | 3 | Bag | – | |
![]() | 61900411621 | SPEC | – | 4 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.54 mm Female Terminal Housing | – | – | – | – | – | – | – | 2.54 | – | – | – | Cable | – | – | 10.8 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4 | – | – | Female | Terminal Housing | – | Bag | Beige | |
![]() | 61900611621 | SPEC | – | 4 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.54 mm Female Terminal Housing | – | – | – | – | – | – | – | 2.54 | – | – | – | Cable | – | – | 15.7 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 6 | – | – | Female | Terminal Housing | – | Bag | Beige | |
![]() | 624030213322 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking | – | – | – | – | – | – | – | 2 | – | – | – | Cable | – | – | 33.4 | – | – | – | – | – | – | – | -25 °C up to +85 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 30 | – | – | Female | Terminal Housing | – | Bag | – | |
![]() | 62403021722 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.00 mm Male Dual Row Horizontal Shrouded Header w. positive locking | – | – | – | – | – | – | – | 2 | THT | 3 | 250 | PCB | 20 | max. | 33.4 | – | – | – | – | – | – | – | -25 °C up to +85 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 30 | – | – | Male | Horizontal | 3 | Tube | White | |
![]() | 970080365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAII Plastic Spacer Stud, metric, internal/ internal | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 8 | – | – | – | – | – | – | – | -30 °C up to +110 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 6 | M3 | UL94 HB | – | – | – | – | – | – | – | – | Bag | Black | |
![]() | 62400113722 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.00 mm Female Dual Row Crimp Contact | – | – | – | – | – | – | – | 2 | – | 3 | 250 | Cable | 20 | max. | – | 28 to 22 (AWG) | 0.081 to 0.326 (mm²) | 10000 | – | – | – | – | -25 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Female | Crimp Terminal | 3 | Big Reel | – | |
![]() | 61910113722 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 2.54 mm Female Crimp Contact | – | – | – | – | – | – | – | 2.54 | – | 3 | 250 | Cable | 20 | max. | – | 28 to 22 (AWG) | 0.081 to 0.326 (mm²) | 1000 | – | – | – | – | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Female | Crimp Terminal | 3 | Small Reel | – | |
![]() | 60900213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Multi-Jumper Jumper with Test Point | – | – | – | – | – | – | – | 2.54 | – | – | 250 | – | 20 | max. | 2.44 | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1 | – | – | Jumper | – | 3 | Bag | Black | |
![]() | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | 2.54 | THT | – | 250 | – | 20 | max. | 5.08 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2 | Single | – | Pin Header | Straight | 3 | Bag | – | |
![]() | 61300311121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | 2.54 | THT | – | 250 | – | 20 | max. | 7.62 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3 | Single | – | Pin Header | Straight | 3 | Bag | – | |
![]() | 61400416021 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 2.0 Type A Horizontal | – | – | – | – | – | – | – | – | THT | 1.5 | 30 | – | 20 | max. | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | USB 2.0 | Type A | 4 | – | – | Receptacle | Horizontal | 1.5 | Tray | White | |
![]() | 885012206102 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | 4000 | 100 pF | ±10% | 100 | 0603 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012206120 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | – | 100 nF | ±10% | 100 | 0603 | -55 °C up to +125 °C | – | 5 | 1 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012209073 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3.2 | – | – | – | 10 µF | ±10% | 50 | 1210 | -55 °C up to +125 °C | – | 10 | 0.01 GΩ | X7R Class II | 2.5 | 0.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | – | – | – | 7" Tape & Reel | – | ||
![]() | 885012209071 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3.2 | – | – | – | 2.2 µF | ±10% | 100 | 1210 | -55 °C up to +125 °C | – | 5 | 0.05 GΩ | X7R Class II | 2.5 | 0.75 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | – | – | – | 7" Tape & Reel | – | ||
![]() | 97790603211 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SCRW Pan Head Screw w. cross slot M3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 6 | – | – | 2000 | – | – | – | – | -30 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | UL94 V-0 | – | – | – | – | – | – | – | – | Bulk | Natural | |
![]() | 885012206125 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | – | 220 nF | ±5% | 50 | 0603 | -55 °C up to +125 °C | – | 10 | 2.3 GΩ | X7R Class II | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | – | ||
![]() | 140357145300 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-OCPT SOP-4 | – | – | – | – | 1.24 | – | – | – | SMT | – | – | – | – | – | 4.4 | – | – | – | – | – | – | SOP4 | -55 °C up to +110 °C | – | – | – | – | 3.6 | – | SOP 4 | DC | 35 | 60 | IF = 5 mA VCE = 5 V | 200 | 400 | 3750 | – | – | – | – | – | – | – | 2 | – | Optocoupler Phototransistor | – | – | – |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | Pitch (mm) | Mount | IR (A) | Working Voltage (V (AC)) | PCB/Cable/Panel | Contact Resistance (mΩ) | Tol. R | L (mm) | Stranded Wire Section (AWG) | Stranded Wire Section (Metric) | Qty. (pcs) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q (%) | DF (%) | RISO | Ceramic Type | W (mm) | Fl (mm) | Package | Input | VCE max. (V) | IF max. (mA) | Test Condition CTR | CTR min. (%) | CTR max. (%) | VISO (V (RMS)) | SW (mm) | Ti | Flammability Rating | Application | Interface Type | Pins (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Color | Samples |
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